Janet B. Anderson
161 lines
3.9 KiB
C
161 lines
3.9 KiB
C
/* devMbbiTestAsyn.c */
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/* share/src/dev $Id$ */
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/* devMbbiTestAsyn.c - Device Support Routines for testing asynchronous processing*/
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/*
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* Original Author: Bob Dalesio
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* Current Author: Marty Kraimer
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* Date: 6-1-90
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*
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* Experimental Physics and Industrial Control System (EPICS)
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*
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* Copyright 1991, the Regents of the University of California,
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* and the University of Chicago Board of Governors.
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*
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* This software was produced under U.S. Government contracts:
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* (W-7405-ENG-36) at the Los Alamos National Laboratory,
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* and (W-31-109-ENG-38) at Argonne National Laboratory.
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*
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* Initial development by:
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* The Controls and Automation Group (AT-8)
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* Ground Test Accelerator
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* Accelerator Technology Division
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* Los Alamos National Laboratory
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*
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* Co-developed with
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* The Controls and Computing Group
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* Accelerator Systems Division
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* Advanced Photon Source
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* Argonne National Laboratory
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*
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* Modification Log:
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* -----------------
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* .01 mm-dd-yy iii Comment
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* .02 mm-dd-yy iii Comment
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* ...
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*/
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#include <vxWorks.h>
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#include <types.h>
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#include <stdioLib.h>
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#include <wdLib.h>
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#include <alarm.h>
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#include <dbDefs.h>
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#include <dbAccess.h>
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#include <recSup.h>
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#include <devSup.h>
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#include <link.h>
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#include <mbbiRecord.h>
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/* Create the dset for devMbbiTestAsyn */
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long init_record();
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long read_mbbi();
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struct {
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long number;
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DEVSUPFUN report;
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DEVSUPFUN init;
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DEVSUPFUN init_record;
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DEVSUPFUN get_ioint_info;
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DEVSUPFUN read_mbbi;
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DEVSUPFUN special_linconv;
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}devMbbiTestAsyn={
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6,
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NULL,
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NULL,
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init_record,
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NULL,
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read_mbbi,
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NULL};
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/* control block for callback*/
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struct callback {
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void (*callback)();
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int priority;
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struct dbAddr dbAddr;
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WDOG_ID wd_id;
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void (*process)();
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};
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void callbackRequest();
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static void myCallback(pcallback)
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struct callback *pcallback;
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{
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struct mbbiRecord *pmbbi=(struct mbbiRecord *)(pcallback->dbAddr.precord);
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dbScanLock(pmbbi);
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(pcallback->process)(&pcallback->dbAddr);
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dbScanUnlock(pmbbi);
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}
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static long init_record(pmbbi,process)
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struct mbbiRecord *pmbbi;
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void (*process)();
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{
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char message[100];
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struct callback *pcallback;
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/* mbbi.inp must be a CONSTANT*/
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switch (pmbbi->inp.type) {
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case (CONSTANT) :
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pcallback = (struct callback *)(calloc(1,sizeof(struct callback)));
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pmbbi->dpvt = (caddr_t)pcallback;
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pcallback->callback = myCallback;
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pcallback->priority = priorityLow;
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if(dbNameToAddr(pmbbi->name,&(pcallback->dbAddr))) {
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logMsg("dbNameToAddr failed in init_record for devMbbiTestAsyn\n");
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exit(1);
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}
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pcallback->wd_id = wdCreate();
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pcallback->process = process;
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pmbbi->val = pmbbi->inp.value.value;
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pmbbi->udf = FALSE;
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break;
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default :
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strcpy(message,pmbbi->name);
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strcat(message,": devMbbiTestAsyn (init_record) Illegal INP field");
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errMessage(S_db_badField,message);
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return(S_db_badField);
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}
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return(0);
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}
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static long read_mbbi(pmbbi)
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struct mbbiRecord *pmbbi;
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{
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char message[100];
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long status,options,nRequest;
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struct callback *pcallback=(struct callback *)(pmbbi->dpvt);
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int wait_time;
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/* mbbi.inp must be a CONSTANT*/
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switch (pmbbi->inp.type) {
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case (CONSTANT) :
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if(pmbbi->pact) {
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printf("%s Completed\n",pmbbi->name);
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return(2); /* don't convert */
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} else {
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wait_time = (int)(pmbbi->disv * vxTicksPerSecond);
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if(wait_time<=0) return(0);
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printf("%s Starting asynchronous processing\n",pmbbi->name);
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wdStart(pcallback->wd_id,wait_time,callbackRequest,pcallback);
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return(1);
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}
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default :
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if(pmbbi->nsev<VALID_ALARM) {
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pmbbi->nsev = VALID_ALARM;
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pmbbi->nsta = SOFT_ALARM;
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if(pmbbi->stat!=SOFT_ALARM) {
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strcpy(message,pmbbi->name);
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strcat(message,": devMbbiTestAsyn (read_mbbi) Illegal INP field");
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errMessage(S_db_badField,message);
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}
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}
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}
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return(0);
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}
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